Flame detector including detector testing apparatus

Details Flame detector including detector testing apparatus Flame detector including detector testing apparatus

1981-05-27

1983-04-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Flame light source

431 24, G06K 710

Patent

active

043814557

ABSTRACT:
A flame detector for monitoring the flame of a burner including an electrically actuatable photo shielding element positioned between a photoelectric element and the flame. The normally transparent photo shielding element may be turned opaque on command for simulating a no flame condition of the burner. The resulting signal from the photoelectric element is compared with a predetermined signal level, when there is actually no flame, for testing the flame detector.

REFERENCES:
patent: 3683372 (1972-08-01), Horn
patent: 3737664 (1973-06-01), Oldenburg et al.

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